$ESIGN
3$
6
# ' #
$ESIGN
!RRANGEMENTS
!LL PROTECTION FUNCTIONS INCLUDING DCDC CONVERTER
ARE ACCOMMODATED ON TWO PLUGIN MODULES OF
$OUBLE %UROPA &ORMAT 4HESE MODULES ARE INSTALLED
IN A HOUSING 80 4WO DIFFERENT TYPES OF HOUSINGS
CAN BE DELIVERED
3$
J J
"
JJJ
IN HOUSING 80 FOR
PANEL SURFACE MOUNTING
4HE HOUSING HAS FULL SHEETMETAL COVERS AS WELL
AS A REMOVABLE FRONT COVER WITH TRANSPARENT PLAS
TIC WINDOW
'UIDE RAILS ARE BUILT IN FOR THE SUPPORT OF PLUGIN
MODULES /N THE TOP AND BOTTOM PLATES OF THE
HOUSING CONTACT AREAS WHICH ARE ELECTRICALLY CON
NECTED TO THE HOUSING ARE INSTALLED TO MATE WITH
THE EARTHING SPRINGS OF THE MODULE #ONNECTION TO
EARTH IS MADE BEFORE THE PLUGS MAKE CONTACT
%ARTHING SCREWS HAVE BEEN PROVIDED ON THE LEFT
HAND SIDE OF THE HOUSING !DDITIONALLY TERMINAL
IS CONNECTED TO THE CASE
!LL EXTERNAL SIGNALS ARE CONNECTED TO SCREWED
TERMINALS WHICH ARE ARRANGED OVER CUTOUTS ON THE
TOP AND BOTTOM COVERS 4HE TERMINALS ARE NUM
BERED CONSECUTIVELY FROM LEFT TO RIGHT AT THE BOT
TOM AND TOP
4HE HEAVY DUTY CURRENT PLUG CONNECTORS PROVIDE
AUTOMATIC SHORTING OF THE CT CIRCUITS WHENEVER
THE MODULES ARE WITHDRAWN 4HIS DOES NOT RELEASE
FROM THE CARE TO BE TAKEN WHEN CT SECONDARY CIR
CUITS ARE CONCERNED 7ITH DIFFERENTIAL PROTECTION
RELAYS TRIP MAY OCCUR DUE TO UNEQUAL CONTACTING
WHEN MODULES ARE WITHDRAWN OR INSERTED
&OR THE OPTIONAL INTERFACE TO A CENTRAL CONTROL AND
STORAGE UNIT AN ADDITIONAL COUPLING FACILITY HAS
BEEN PROVIDED &OR OPTICAL FIBRE CONNECTION MOD
EL 3$
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#
TWO & 3-! CONNEC
TORS HAVE BEEN PROVIDED
4HE DEGREE OF PROTECTION FOR THE HOUSING IS )0
FOR THE TERMINALS )0 &OR DIMENSIONS PLEASE RE
FER TO &IGURE
3$
J J
#
JJJ
IN HOUSING 80 FOR
PANEL FLUSH MOUNTING
OR
3$
J J
%
JJJ
FOR
CUBICLE INSTALLATION
4HE HOUSING HAS FULL SHEETMETAL COVERS AS WELL AS
A REMOVABLE FRONT COVER WITH TRANSPARENT PLASTIC
WINDOW FOR PANEL MOUNTING
'UIDE RAILS ARE BUILT IN FOR THE SUPPORT OF PLUGIN
MODULES /N THE TOP AND BOTTOM PLATES OF THE
HOUSING CONTACT AREAS WHICH ARE ELECTRICALLY CON
NECTED TO THE HOUSING ARE INSTALLED TO MATE WITH
THE EARTHING SPRINGS OF THE MODULE #ONNECTION TO
EARTH IS MADE BEFORE THE PLUGS MAKE CONTACT
%ARTHING SCREWS HAVE BEEN PROVIDED ON THE REAR
WALL OF THE HOUSING
!LL EXTERNAL SIGNALS ARE CONNECTED TO CONNECTOR
MODULES WHICH ARE MOUNTED ON THE REAR COVER
OVER CUTOUTS &OR EACH ELECTRICAL CONNECTION ONE
SCREWED TERMINAL AND ONE PARALLEL SNAPIN TERMI
NAL ARE PROVIDED &OR FIELD WIRING THE USE OF THE
SCREWED TERMINALS IS RECOMMENDED SNAPIN CON
NECTION REQUIRES SPECIAL TOOLS
4HE HEAVY DUTY CURRENT PLUG CONNECTORS PROVIDE
AUTOMATIC SHORTING OF THE CT CIRCUITS WHENEVER
THE MODULES ARE WITHDRAWN 4HIS DOES NOT RELEASE
FROM THE CARE TO BE TAKEN WHEN CT SECONDARY CIR
CUITS ARE CONCERNED 7ITH DIFFERENTIAL PROTECTION
RELAYS TRIP MAY OCCUR DUE TO UNEQUAL CONTACTING
WHEN MODULES ARE WITHDRAWN OR INSERTED
4HE OPTIONAL INTERFACE TO A CENTRAL CONTROL AND
STORAGE UNIT 3$
J JJJJJ J
"
IS LED TO A
MODULE WITH & 3-! CONNECTORS FOR OPTICAL FIBRE
CONNECTION
4HE PLUG MODULES ARE LABELLED ACCORDING TO THEIR
MOUNTING POSITION BY MEANS OF A GRID SYSTEM EG
!
4HE INDIVIDUAL CONNECTIONS WITHIN A MODULE
ARE NUMBERED CONSECUTIVELY FROM LEFT TO RIGHT
WHEN VIEWED FROM THE REAR EG !
REFER TO
&IGURE
$EGREE OF PROTECTION FOR THE HOUSING IS )0 )0
FOR CUBICLE INSTALLATION FOR THE TERMINALS )0 &OR
DIMENSIONS PLEASE REFER TO &IGURE
Summary of Contents for 7SD502
Page 148: ... PPENDIX 3 6 PPENDIX ENERAL DIAGRAMS ONNECTION DIAGRAMS 4ABLES ...
Page 176: ... 3 6 ...